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dlinn [17]
3 years ago
8

PLEASE HELP!

Mathematics
1 answer:
mojhsa [17]3 years ago
3 0
The answer would be (-9,3)
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What is the missing length?
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80

Step-by-step explanation:

89^2-39^2=6400, 6400=80^2

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I'll give 50 points and brainliest to anyone who gives the best answer and explanation! These problems are confusing to me and a
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Answer:

<h2>(-3,8)</h2><h2>Or</h2><h2>x=-3 and y=8</h2>

Step-by-step explanation:

5 0
3 years ago
A candle in the shape of a circular cone has a base of radius r and a height of h that is the same length as the radius. which e
ladessa [460]

Answer:

\frac{r(1-\sqrt{2})}{-3}

Step-by-step explanation:

Volume of cone = \frac{1}{3} \pi r^{2} h

Since we are given that a circular cone has a base of radius r and a height of h that is the same length as the radius

                          = \frac{1}{3} \pi r^{2} \times r

                          = \frac{1}{3} \pi r^{3}

Surface area of cone including 1 base = \pi r^{2} +\pi\times r \times \sqrt{r^2+h^2}

Since r = h

So, area = \pi r^{2} +\pi\times r \times \sqrt{r^2+r^2}

              = \pi r^{2} +\pi\times r \times \sqrt{2r^2}

              = \pi r^{2} +\pi\times r^2 \times \sqrt{2}

Ratio of volume of cone to its surface area including base :

\frac{\frac{1}{3} \pi r^{3}}{\pi r^{2} +\pi\times r^2 \times \sqrt{2}}

\frac{\frac{1}{3}r}{1+\sqrt{2}}

\frac{r}{3(1+\sqrt{2})}

Rationalizing

\frac{r}{3(1+\sqrt{2})} \times \frac{1-\sqrt{2}}{1-\sqrt{2}}

\frac{r(1-\sqrt{2})}{-3}

Hence the ratio the ratio of the volume of the candle to its surface area(including the base) is \frac{r(1-\sqrt{2})}{-3}

8 0
3 years ago
Read 2 more answers
HELP pleasee and ty to whoever does!!
Margaret [11]
Answers:
26) 50 percent chance
27) 25 percent chance
28) About 25 times
29) About 20 times
6 0
3 years ago
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